At the "Unlockables" menu, hold Nunchuck Up until the code entry prompt appears. Then, enter one of the following codes on the Wii-mote to activate the corresponding cheat option at the "Unlockables" menu:
At the code entry screen, press Up, Right, Down, Right, Up.
At the code entry screen, press Left, Down, Up, Right, Up. Note: Your shield will still decrease, but you cannot die when it is gone.
At the code entry screen, press Right, Left, Down, Left, Up. This cheat unlocks all weapons except the Shrink Ray. Note: Successfully complete the first mission to fully upgrade all weapons, including those for the saucer and Big Willy.
At the code entry screen, press Right, Up, Up, Left, Right.
At the code entry screen, press Right, Right, Up, Left, Left.
At the code entry screen, press Left, Left, Up, Right, Down.
At the code entry screen, press Down, Up, Left, Up, Right.
At the code entry screen, press Up, Right, Down, Down, Left. In this mode, the CPU will ignore Crypto unless you fire a weapon or use PK.
At the code entry screen, press Right, Left, Right, Left, Up to unlock the Crypto Dance Fever skin.
At the code entry screen, press Left, Up, Down, Up, Down to unlock the Kluckin's Chicken Blimp skin.
At the code entry screen, press Left, Down, Right, Left, Right to unlock the Leisure Suit skin.
At the code entry screen, press Down, Up, Right, Down, Right to unlock the Pimp My Blimp skin.
In every level there is a little yellow box. If you go in it, a number of aliens will appear that will kill people. For example, on the first level there is one on the ships. On the last level there is one at the army base. You will find the base when there are a lot of cars with missiles.
At Fairfield, go to right corner of the map where the power plant is located. Directly below that is a small field. Walk on the outside until you see a small yellow square. Walk in to it, and the alert should go up to full. When you walk out of the field, you should see Furons with disintegrator rays.
In Harbor City, go to the first fuel ship. Go to the side towards the sea. There should be a hole in the boxes, and in there should be the yellow square.
In Fantasy Atoll, the box is in a cave on the outer side of Pirate Island. The box should be in the right-hand corner.
Harbor City (directions are based on the harbor being south of Big Willy)
Fairfield (directions are based on initial saucer site being south)
Fantasy Atoll (directions are based on the boat being docked on the south end of the atoll)
Vietmahl (directions are based on the village with Big Willy being the northeast corner)